appView.addJavascriptInterface() does not work on API 17

android, cordova, java, javascript

Solution

What you have to do on API 17 is annotate your method with `@JavascriptInterface`:

public class CustomNativeAccess {
   @JavascriptInterface

and then get rid of the constructor part:

/*private WebView mAppView;
    private DroidGap mGap;
    public CustomNativeAccess(DroidGap gap, WebView view) {
        mAppView = view;
        mGap = gap;
    }
*/

Also be sure you import JavascriptInterface in your project:

 import android.webkit.JavascriptInterface;

You can read about it more here: WebView Android

Edit: You will have to annotate each method with @JavascriptInterface within your class that you'd like to access from Javascript.

Problem

i am able to use java function from my phonegap java script function and android 2.2 but same code is not run on API 17. what should i have to do to call native java code on from java script in API 17. i use this code in my java file ``` objCustomNativeAccess = new CustomNativeAccess(this, appView); appView.addJavascriptInterface(objCustomNativeAccess, "CustomNativeAccess"); super.loadUrl("file:///android_asset/www/index.html"); ``` my CustomNativeAccess class is ``` public class CustomNativeAccess { private WebView mAppView; private DroidGap mGap; /** * Constructor * * @param gap * @param view */ public CustomNativeAccess(DroidGap gap, WebView view) { mAppView = view; mGap = gap; } /** * Get the device phone number * * @return */ public JSONObject login(String email, String password) { JSONObject object = new JSONObject(); object.put("Login_Status", login_status); object.put("date", dateString); return object; } ``` and in my java script i use this line to call this login function ``` var value = window.CustomNativeAccess.login(email,pass); ``` so using this i successfully call this on api 2.2 but when i run this code on api 17 it give me error Uncaught TypeError: Object [object Object] has no method 'login' at file:///android_asset/www/index.html:81 how i can i use this on api 17

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